Shipping drum



May 29, 1928.

H. E. MccRERY SHIPPING DRUM Filed Sept. 23, 1925 3 Sheets-Sheet l gru/vento May 29, 192'8.

H. E. MCCRERY SHIPPING DRUM Filed Sept. 25, 1925' www s sheets-sheet 2 i W1 WMM I: we

. O MN May 29, 1928.

H. E. MCCRERY SHIPPING DRUM Filed sept. 25, 1925 3 Sheets-Sheet 5 lllllllm Patented May 29, 1928.

` WARE.

l 1,671,735 UNITED sufra-S PATENT eFH-Ca HAROLD 1i MCCBERY, or APoLLo, rEnNsYLvAmA, AssIGNoR 'ro PITTSBURGHMSTEL nimm COMPANY; or PITTSBURGH, PENNSYLVANIA, A conPoRATIoN or pianasH/IPPING namur.

applicati@ area settexaterafa,'1sa`.ysrigi Na sansa Y This invention relates to shipping drums, "Pendapplication Serial iNo. 699,520, tiled w ,"FlgureQis a and is a continuation in partof my 1n Mroh th, 1924. t

5 An object ofthe invention is the `provision of reenforcing means for the top" and bottom of a metallic shipping drum. In the present inventiorn Iprovide-adrum having a rolled `top and bottom yand afolded 1.01ocking seam at the meeting edgesof lthe body. l'place strips of heavy, ga e metal in the ,rolled edges `for"reeniorcing t e same. In the ordinary "shipping drum, the top and bottom edges are submitted to the greatest:

l5 Wear andthe life ofthe drum maybe ina- `terially increased by providing suitablefreenforcing means atthese points.

`A further object of the inventionis to provide a novel :form of head .construction adapted to forma drumvvhich is Water tight and hence practicable'fer use as ashipping container for liquids.`

A still further object is to providea novel head `constitu@tion for a drum .adapted "to contain liquids, :the connectiongbetween the that Awhen the drum containsailiquid and is standing onend, the Weight ofthe liquid Within the drum tends to more {tightlyseal the head and body connection` to insure a leak-proof joint.

drum,A

the upper edge` of `the drumvshowin 'the heavy gagebracing stripin `position and machine ypunched at the factory to retain Eitin position,l v

`Figure 3 is a `similar' `view showing `the drum afterbeing rolled,l z

Figure 4 is a vertical sectional view of strip in positionreadyforrolling. t i Figure 5 .is a similar view" of the bottom i of the drumafter rolling, 1

" Figure 6 is a sideelevation of a portion of the top of the drumlookingfrom Vchewinside showing the arrangementotthe'fbracing istrip at theseam H Figure 7 is 1a perspective view of a numberof the drums nestedlfor shipment,

numeral 71p4 designates the `body y the drum which is 4formed of a` s and a of fh@ of the ,sheet ofmetal heads and side Walls of the drunibeingsuch of one end ofthedrumfbody shown in igf ure 1()` with the head arranged in position,"y

Figure 12 is a similar view shovvingfthe 'body of the drum and a'ngelovf rthe rolledto retain the head in posit-ion, @md5` t Figure 13 is a `detail view shovviiigthe Vmanner`of rolling the headand drum body.

l Referring to the drawings, the referene plortion lof eet metal Shaped te f @vdayfiedral bvd lfb@ meeting ages are Iconnected tojeac 'other by a locking seam 2. `'Ihedetail eonstruotion of the locking searnzisfshovvnin Figures 8 drawings. As shown, eaoh edge fermfngthe bodylis first Offset, as at 3, .and then extended farallel to the body` tortion; as at (1L y ach edge is `then {foldetiifon itself as at 5`,` and *Plien extended @bleh eagle; 'et 3- The ,materialjbeyondthe otfsetisiarranged of y thickness and onefedge "is" provided y with anextension arranged besidewthe In the accompanying drawingsyl have adjacentbody Portion; The top lof the drum is het `im@idly land than dewmrardly, teeming a Stripft "shown in Figure"s`2 and ofthe dravvi gs, p and this Vstri Figure2 is avertical sectional View of;`

of the drum` etvveenithe body portion and l the strip 6'. This ibpafing strip is retained in position by PunChma-the 10p 0f `the drum Suitable inter-vals p i Figure of thedravvingsgl have `showlithfet the bottom ofthe drumshowingthe bracing as indicated *at `9. -yIn arrangement ofgfthe bracing strip` with respeetltp the seam 2; As showmthe edges suitableintervals to^faei1it`ate the'lproper ar- :rai-agement of 'the etripl A bfeng Strip 8ofgheavygae metal is arranged at thetop 10 .of the bracing 'strip y'are out of alinement i t With the seam Wherebythe Weakest" `otion ofthe bracing Strippisarran ed out o alinement lthe nieakestlportifon of @body driimsre adptlefdltrbe shippedyiththe top arlafnged asshov'vn fin Figure 1240i theI(iraqirings",` after ariivel at their" deetieatiea thetop af the" the drum.'

The bottom of the drum is similarly provided with a bracing strip 13. As shown,`

the lower edge of the body portion is turned upwardly, as at 14. and a head 15 is adapted to be arranged between thisv turned-up portion and the side wall of the body. The

head is provided witha peripheral flangeV '16, extending between the two thicknesses of metalA and the` bracing strip is adapted to extend downwardly on one side of theA flange and is provided with a curved portion 17 extending upwardly on the opposite side of the flange. VThe bottom of the drum is likewise adapted to be rolled, as c indicated at 18 in Figure 5 of the drawings. l

When a number of drums are to be bundled for shipment, the body vportions are arranged nested, as shownl in Figure 7 of the drawings and tied together in any suitable manner, as by wires 19. The bottom of the inner drum is placed in position be- ,fore bundling and the bottoms of the remaining drums arranged inside the inner drum. The drums are shipped unrolled and the tops and bottoms are rolled after they reach their destination. y

Inl assembling a drum, the side seams are first arranged asshown in Figure 8 ofthe drawings,land then hammered to provide a tight seam. The extension 4 is arranged over the seannas shown.

In Figures 10cto 13 ofy the drawings, I have shown a. somewhat modified construction. In this form of the invention I employ a cylindrical drumbody 20 having relatively heavy annular rings 21 rolled therein to support lthe drum against inward bending or` distortion and serve as hoo s upon which the drum may be rolled. Tlie drum is provided at. opposite ends with inturned annular flanges 22 which are formed parallel to the vsides of the drum and spaced therefrom'` as shown. Each end of the drum may be closed by a head23 provided with an annular flange 24 at its edge which is adapted to be received in the space between `end 25, as shown in Figure 11.

the flange 22 and the body of the drum. The end of the flange 24, the outer extremity of each flange 22and the. adjacent endof the drum are adapted to form in effect a drum After the head hasbeen placed in position the drum is adapted to be rolled as shown in Figure 11 to turn the drum end 25 inwardly, the

adjacent outer face of the body of the drum` then, being arranged flat and substantially at right angles to the walls of the drum as indicated at 26 in Figure 12. In the rolling action referred to, a shoulder 27 is formed inwardly of the head 23 to secure it against inward movement, and the flanges 22 and 24, and the adjacent portion of the drum are curved as at 28 outwardly of the flat portion 26. v

In Figure 13 of the drawings, I have indicated one practical method of forming the closure for the drum wherein I employ rolls 29 and 30p. The roll 30 is provided at one edge with an annular rib 31 adapted to be arranged `adjacent thehead in contact with the flange 22, while the roll 29 is provided with annular flanges 32 and 33, the latter contacting with the drum adjacent itslower end during the initial rolling operation. As shown in Figure 13, the rib 32 isl materially smaller in diameter than the rib 33 `for a purpose to be described,

The method of assembling the heads of the drum, as illustrated inFigure'sf and 5, is as follows: The head A15 is placed in position as shown in Figur-e4, with theflange 16 thereof arranged between the adjacent portions of the reinforcingstrip 13 whereupon'the entire structure be ond thev head 15 may be rolled or stretc ed outwardly and the extremity of the drum turned inwardly as indicated at' Figure 5. It will bev apparentthat a portion of the extremity of the completed drum extends inwardly toward the center thereof a vgreater distance than the curve formed'in theflange 16 of the head, and it has beenjfound that the resulting joint is entirely watertight.V When the drum contains a liquid and is standing on end, theweight of the liquid within the drum tends to bend the extremity of the drum inwardly, thuscausing an additional bend in the flange 16 and the adjacent portions of the drum body and reinforcing strip which tends to more `tightly clamp these elements against each other to prevent leakage of li uid.

While the vormv of the drum as described has been found thoroughly satisfactoryy for use in 'shipping liquids, it is preferable to employ the form of the device shown in Figures 10 to.13 inclusive. In the 'latter form,the provisionof the plurality of deep rolled rings 21 materially strengthens the drum, and the elimination of the reinforcing strips provides a] structure which is cheaper to manufacture. In the modified form of the invention, the'edges of the metal forming the body portion may be assembled in the same manner as that described in the other form of the invention. When placing the heads in position, the latter are inserted into the drum edgewise, the drum being sprung suiciently to permit the entrance thereof, and the flange 24 is inserted in posi` tion as shown in Figure 11. The rolls 29 and 30 are then brought into operation, the initial step of 'the' rollinr Aoperation being illustrated in Figure 13. slhe ribs 31 and`33 lll) llt)

Contact with the flange 2e and the bodyf the drum respectively and the rollsare then moved toward each other. The initial movement of the rolls toward each other turns thedrum end 25 inwardly transverse to the axis of the drum, and continued movement of the roll brings the rib 32 into contact are to be taken as preferred examples of the same and that various changes in the shape, size and arrangement of partsmay beresorted to without kdeparting from the spirit of the invention or the scope of the subjoined claims.

I claim: i

l. A metallic shipping drum comprising a cylindrical body having one end turned inwardly to form a continuous flange spaced from the adjacent portion of the body, a head in said body provided with an annular flange arranged in the space between said first named flange and the adjacent portion of -the body, said flanges and the adjacent portion of the body forming a drum end,

` said drum end being rolled to provide an inhead formed by wardly extending annular rib arranged substantially at right angles to the axis of said body to provide a supporting surface of substantial area.

2. A metallic shippingdrum comprising a cylindrical body having the metal at one end thereof turned inwardly to form a continuous flange spacedfrom the adjacent portion of thebody, a` head in said body provided with an annularflange `arranged in the space between said firstnalned flange and the adjacent portion of thebody, said flanges and the adjacent ortion of the body being rolled inwardly su stantially at right angles to the axis of the body, to provide a supporting surface of substantial area having an annular portion arranged wholly inwardly of the curvein the flange of said the rolling thereof inwardly. i j y j, i

3. A metallic shipping drum comprising a `cylindrical body having one end turned inwardly to form a continuous flange spaced from the adjacent portion of the body, a head in said body provided with an annular flange arranged in the space between said first named flange and the adjacent portion of the body, saidv flanges and" supporting surface of substantial the adjacent portion of the body form ing a drum end, said drum end being rolled to form an inwardly extending annular rib arranged `substantially at right angles to the axis of thebody and forming a body being provided with an annular shoulder rolled inwardly therefrom and contacting with the inner face of said head.

i `4. A metallic shipping. drum comprising a cylindrical body having one end turned inwardly to form a flange substantially parallel to and spaced from the adjacent portion of the body, a head arranged in said body and provided with an annular flange,

the space between said first named flange and the adjacent portion of the body correspondingin width to the thickness of and area, said i se i adapted to receive the flange of said head,

said flanges and the adjacent portion of the body forminga drum end, said drum end being rolled inwardly substantially at right angles to the axis of said body to provide a supporting surface of substantial area havking an annular portion arranged wholly inwardly of the outer extremity of said head, and an annular shoulderformed on said body andcontacting with the inner face of said head.` j

y5. A metallic shipping drum comprising a sheet of metal shaped to form a cylinder and having its edge portions bent backw'ardly upon themselves to form flaps, one of said flaps being arranged against the in ner face of the drum, the other of saidv flaps being arranged against the outer face of the drum, said flaps and the adjacent portions of the sheet being bent to form an interlocking joint, said flaps extending maf terial distances on opposite sides of said joint, the extremity of said flap arranged against the outer face of said drum being bent backwardly against said joint after the lat-ter is assembled. I

6. A metallic shipping drum comprising a cylindrical body having the metalat one end thereof turned inwardly to form a continuous flange spaced fromthe adjacent portion of the body, a head in said body` including a central disk portion and an anf nular flange arranged in the space between said first named flange and the adjacent portion of the body, said flanges and the adjacent portion of the body being rolled inwardly substantially at right angles tothe axis of the body to provide a supporting surface of substantial area having an annular portion arranged wholly inwardly of the curve in theflange of saidhead formed by the rolling thereof inwardly, said flanges being spaced a substantial disk portion of said head.

distance below the In testimony whereofiI affix my signature. i

HAROLD E. MGCRERY. 

